Polishing-machine.



No. 772,222. PATENTED 001". 11,1904. H. A. DAMEROW.

POLISHING MACHINE.

APPLICATION TILED JUNE 1, 1904.

UNITED STATES Patented October 1 1, 1904,

PATENT OFFICE.

HERMAN A. DAMEROW, OF SCHALLER, IOWA.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 772,222, dated October11, 1904.

Application filed June 1, 1904. Serial No. 210,669. (No model.)

To all whont it may concern/.-

Be it known that I, HERMAN A. DAMEROW, a citizen of the United States ofAmerica, and a resident of Schaller, county of Sac, State of Iowa, haveinvented certain new and useful Improvements in Polishing-Machines, ofwhich the following is afull and clear specification, reference beinghad to the accompanying drawings, in which Figures 1 and 2 represent,respectively, a side and a front elevation of my improved apparatus.

The object of this invention is to provide an extremely simple andinexpensive apparatus for polishing implements, especially plows andother odd-shaped agricultural devices in the polishing of which it is ofimportance for the sake of convenience as well as efliciency to providemeans whereby the polishing-wheel shall be driven at a high rate ofspeed and be capable of a practically universal adjustment with respectto the article undergoing the polishing operation, as more fullyhereinafter set forth.

The invention consists of certain novel features of construction andcombination of parts hereinafter described, and particularly pointed outin the claim appended.

Referring to the drawings by reference-letters, a designates a suitabledriving-pulley connected by a belt 6 to a pair of smaller pulleys 0, oneof which istight and the other loose on shaft d, a belt-shifter cl beingsuitably arranged to enable the belt to be shifted from one pulley tothe other. These devices are attached to the ceiling of the shop bysuit-' able shaft-hangers.

On shaft d alongside pulleys c is another larger pulley c, and pivotallydepending from the shaft is a yoke f, which spans said pulley's e and 0.Rigidly depending from the center of the bow or yoke is a rod g, andswiv-' elly connected to the lower'end of this rod is another bow oryoke 7t. nected at the center of its upper convex side to the extremelower end of the rod by a pair of straps '5 and j, bolted at theiroverlapped ends to the convex side of the upper surface, the under strapconforming to the curvature of bow and the other one having a bent-up U-This bow is con-- shaped part 7", through which the rod passes. The endof the rod is stepped in a hole in the under strap, and a pin 7:: isinserted in the rod under the U-shaped bend to retain the rod. In thismanner the yoke is made free to turn horizontally and at the same timeis properly braced with respect to the rod;

Journaled in the ends of the yoke it is a shaft Z, and pivotallyconnected to this shaft are the ends of another yoke m, similar in shapeto yokes it and f and having rigidly attached to the center of itsconvex side a rod a, to the extreme end of which is swivelly attached(by a connection at, similar to that between rod 9 and yoke it) anotheryoke or fork 0. On shaft Z, within the yokes a and m, are rigidlymounted a pair of pulleys p p, the smaller one of which is connected bybelt Q with pulley c and the larger one of which is connected by belt 7to a small pulley s, secured on a transverse shaft 2,, journaled in theends of a fork 0. The pulleys is fixed to the shaft 2, at a pointbetween the arms of the fork, and a grinding and polishing wheel a isattached to the left end of the shaft, which is extended beyond the leftarm of the fork to receive it. The rod n is attached to fork 0 to oneside of the center of the yoke, so that the axis of the swivelconnection shall pass between the pulley and the grinding-wheel, wherebynot only shall said pulley s bebrought into line with its driving-pulleyp, but also that the polishing-wheel shall be rendered capable of apartial planetary movement about the axis of the swivel without throwingoff the belt. Thus mounting the polishing-wheel outside of the fork andrendering it capable of beingturned bodily around through a half-circle(the axis of which is the swivel connection n) while running at a highspeed is very advantageous in that'it enables the operator to readilywork the wheel into odd-shaped recesses and outof-the-way corners, as isobvious, and to further facilitate this insertion of the wheel intorecesses which otherwise would be out of the question I employ apeculiarly constructed and arranged bail-handle o. The ends of the bailare attached to the respective arms of the fork, and the handle portionof the bail extend s forwardly and upwardly to a point beyond theperiphery of the polishing-wheel and is extended laterally to form aloop 2;, lying just in front of the polishing-wheel. With ahandle ofthis construction it is evident that the operator may quickly and nicelymanipulate the polishing-wheel, twisting and turning it freely about asthe exigencies of the work demands.

One end of the swivel connection 01/ is attached to the fork through themedium of suitable bolts and a bracket-plate w, which, in effect, is apart of the fork, and attached to this bracket-plate is one end of aspring-band 00, whose forward end is attached to the lateral loop 41 ofthe handle, the spring curving up over the polishing-wheel, and therebyserving as a sand guard therefor. This spring is transversely corrugatedto enable it to yield slightly torsionally.

To counterbalance the horizontally-swinging arm and enable it to bemanipulated readily and also to draw it up to the ceiling of the shopwhen not in use, I attach a suitable cord and weight 2 to it, the cordbeing preferably connected to the fork 0.

It will be observed that the polishing-wheel by reason of mounting it ona pivotally-depending jointed hanger with a swivel in each member-willhave a wide range of adjustment vertically and laterally.

Having thus described my invention, what Iclaim asnew, and desire tosecure by Letters Patent, is

In a machine of the class described, the combination of a pivotallydepending jointed hanger, a fork swivelly connected to the free endthereof and carrying a shaft in its ends, a pulley on this shaft withinthe fork, a grinding-wheel on the shaft outside of the fork, a bail-likehandle attached to the fork and extending forward beyond the peripheryof the grinding wheel and having a lateral ofi'set loop lying in frontof said wheel, a sand-guard connected to the offset loop of the handleand curving backwardly over the grinding-wheel and attached at its rearend to the fork, and suitable driving-belts.

In testimony whereof I hereunto affix my signature, in the presence oftwo witnesses, this 19th day of May, 1904.

H. A. DAMEROVV.

W'itnesses:

J. T. EDSON, SAML. S. ADLINE.

